Provided are a method and system for determining State of Health (SOH) of a battery. The method includes: detecting a charging state of the battery that is being charged by a Constant Current (CC) or a Constant Voltage (CV); adding a low frequency current signal to the CC that is charging the battery to obtain a low frequency charging current, or adding a low frequency voltage signal to the CV, that is charging the battery to obtain a low frequency charging voltage; determining one or more parameters relating to the battery during the charging state of the battery; calculating an internal impedance and Open Circuit Voltage (OCV) values based on the one or more parameters; and determining SOH of the battery based on the calculated internal impedance and the OCV values.
Legal claims defining the scope of protection, as filed with the USPTO.
3. The method as claimed in claim 1, wherein the one or more parameters comprise at least one of current, voltage or temperature related to the battery.
4. The method as claimed in claim 1, wherein the charging state of the battery is at least one of a partial charge or a full charge.
5. The method as claimed in claim 1, wherein the low frequency current signal or the low frequency voltage signal has a frequency in a range of 1 hertz to 10 hertz.
6. The method as claimed in claim 1, wherein the low frequency current signal or the low frequency voltage signal is a square wave comprising positive values.
9. The battery health determining system as claimed in claim 7, wherein the one or more parameters comprise at least one of current, voltage or temperature related to the battery.
10. The battery health determining system as claimed in claim 7, wherein the charging state of the battery is at least one of a partial charge or a full charge.
11. The battery health determining system as claimed in claim 7, wherein the low frequency current signal or the low frequency voltage signal has a frequency in a range of 1 hertz to 10 hertz.
12. The battery health determining system as claimed in claim 7, wherein the low frequency current signal or the low frequency voltage signal is a square wave comprising positive values.
15. The non-transitory computer-readable recording medium as claimed in claim 13, wherein the one or more parameters comprise at least one of current, voltage or temperature related to the battery.
16. The non-transitory computer-readable recording medium as claimed in claim 13, wherein the charging state of the battery is at least one of a partial charge or a full charge.
17. The non-transitory computer-readable recording medium as claimed in claim 13, wherein the low frequency current signal or the low frequency voltage signal is a square wave comprising positive values.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
August 27, 2020
August 2, 2022
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